Question: When did {battle} of {6th Bomber Corps} {formed}  ?
Paraphrase: When was the { 6th Bomber Corps } battle { formed }?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q18234919 wdt:P241 ?X . ?X wdt:P607 ?answer}
Answer: Chernobyl disaster, Korean War, Spanish Civil War, Soviet–Afghan War, Winter War, Battles of Khalkhin Gol, War of Attrition